Selection may act in different ways on the evolutionary process, and hence the fitness of each individual may be considered on the first (birth) event [1]}, [2]}, on the second (death) event [3]}, on simultaneous events [4]}, or to depend exponentially on both individuals' payoffs [5]}. Here we are focusing on the birth-death process with selection in the birth event, which is typically described as the frequency-dependent Moran process [1]}, [2]}. This is a process under which it has been suggested that cooperators perform generally worse [3]}, [9]} when compared to the results obtained under the others.
